Custom iOS UIButton Sub-Class Not Updating Title - ios

Question

I have a subclass of a UIButton that takes the title label, and puts it under the button's image, as opposed to the right of the image:
final class ImageButton: UIButton {
#IBInspectable var cornerRadius: CGFloat = 8
#IBInspectable var borderColor: UIColor? = .black
private enum Constants {
static let imageSize: CGFloat = 40
static let titleHeight: CGFloat = 12
}
override func titleRect(forContentRect contentRect: CGRect) -> CGRect {
if #available(iOS 15, *) {
return super.titleRect(forContentRect: contentRect)
}
else {
_ = super.titleRect(forContentRect: contentRect)
return CGRect(
x: 0,
y: contentRect.height - Constants.titleHeight,
width: contentRect.width,
height: Constants.titleHeight
)
}
}
override func imageRect(forContentRect contentRect: CGRect) -> CGRect {
if #available(iOS 15, *) {
return super.imageRect(forContentRect: contentRect)
} else {
return CGRect(
x: contentRect.width / 2 - Constants.imageSize / 2,
y: (contentRect.height - titleRect(forContentRect: contentRect).height) / 2 - Constants.imageSize / 2,
width: Constants.imageSize,
height: Constants.imageSize
)
}
}
override var intrinsicContentSize: CGSize {
if #available(iOS 15, *) {
return super.intrinsicContentSize
}
else {
_ = super.intrinsicContentSize
let size = titleLabel?.sizeThatFits(contentRect(forBounds: bounds).size) ?? .zero
let spacing: CGFloat = 12
return CGSize(
width: max(size.width, Constants.imageSize),
height: Constants.imageSize + Constants.titleHeight + spacing
)
}
}
override init(frame: CGRect) {
super.init(frame: frame)
setup()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setup()
}
private func setup() {
if #available(iOS 15, *) {
var myConfiguration = UIButton.Configuration.plain()
myConfiguration.imagePlacement = .top
self.configuration = myConfiguration
} else {
titleLabel?.textAlignment = .center
}
}
override func draw(_ rect: CGRect) {
layer.cornerRadius = cornerRadius
layer.masksToBounds = true
layer.borderWidth = 1
layer.borderColor = borderColor?.cgColor
}
}
Trying to change the button's title does not have any effect:
myCustomButton.setTitle("Disable Box Select", for: .normal)
I tried adding:
myCustomButton.layer.setNeedsLayout()
myCustomButton.layer.setNeedsDisplay()
But, nothing seems to change the title of myCustomButton

Answer 1

This is not really an answer, but in response to the OP's comment...
Storyboard:
Complete controller code (using your posted ImageButton class, unedited):
class CustBtnVC: UIViewController {
#IBOutlet var myCustomButton: ImageButton!
override func viewDidLoad() {
super.viewDidLoad()
if #available(iOS 15.0, *) {
var cfg = myCustomButton.configuration
cfg?.title = "Test"
myCustomButton.configuration = cfg
} else {
// Fallback on earlier versions
myCustomButton.setTitle("Pre-15 Test", for: .normal)
}
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if #available(iOS 15.0, *) {
var cfg = myCustomButton.configuration
cfg?.title = "Disable Box Select"
myCustomButton.configuration = cfg
} else {
// Fallback on earlier versions
myCustomButton.setTitle("Pre-15 Disable Box Select", for: .normal)
}
}
}
Note: since your custom button code is setting the button style for iOS 15+ the button .configuration should be used instead of .setTitle(...) when running on iOS 15+
On launch:
after tap on the view: